Official Ruby Gem to access the Hark API
A Ruby API for accessing Freebase. It wraps the Metaweb Architecture to smart Ruby Objects.
Additional Reports for Pivotal Tracker
Search Engine Optimization (SEO) plugin for Ruby on Rails applications.
A feed fetching and parsing library that treats the internet like Godzilla treats Japan: it dominates and eats all.
A command line tool that analyzes request logfiles (e.g. Rails, Apache, MySQL, Delayed::Job) to produce a performance report.